Get your phone Emei Number by dialing by checking your mobile phon carton you bought it with Copy it out. If you have lost it, I am not sure this will work for you but if you still have it, goto next step.
Send a Mail to firstname.lastname@example.org in The following format:
Last used No.:
E-mail for communication:
and your phone will be traced within 24 hours via a complex system of GPRS and Internet.
You will find where your handset is being operated even in case your no is being changed.